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I have found this problem to be fairly common with the grasslin clocks

Is it a relay that welds shut?
Or have you ever determined the cause?
I usually install the Intermatic/Grasslin DTMV-40 or the newer one with the automatic voltage selection - can't remember the model number...
Is there a better defrost timer on the market? I suppose I can go back to the 8045, 8145 Paragon mechanicals but they seize up a lot, burn out their contacts, etc. and are almost twice the price at times.

Is it a relay that welds shut?
Or have you ever determined the cause?
I usually install the Intermatic/Grasslin DTMV-40 or the newer one with the automatic voltage selection - can't remember the model number...
Is there a better defrost timer on the market? I suppose I can go back to the 8045, 8145 Paragon mechanicals but they seize up a lot, burn out their contacts, etc. and are almost twice the price at times.

I ran into this last week. These are the mechanical clocks with the small rockers around the outside of the dial. I had one defrost that wouldn't terminate, the rest were fine. Must be part of the rocker broken or worn.